{
  "id": "1506.00723",
  "version": "v1",
  "published": "2015-06-02T02:01:12.000Z",
  "updated": "2015-06-02T02:01:12.000Z",
  "title": "Current-Driven Motion of Magnetic Domain Wall with Many Bloch Lines",
  "authors": [
    "Junichi Iwasaki",
    "Naoto Nagaosa"
  ],
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "The current-driven motion of a domain wall (DW) in a ferromagnet with many Bloch lines (BLs) via the spin transfer torque is studied theoretically. It is found that the motion of BLs changes the current-velocity ($j$-$v$) characteristic dramatically. Especially, the critical current density to overcome the pinning force is reduced by the factor of the Gilbert damping coefficient $\\alpha$ even compared with that of a skyrmion. This is in sharp contrast to the case of magnetic field driven motion, where the existence of BLs reduces the mobility of the DW.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-06-02T02:01:12.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "magnetic domain wall",
      "current-driven motion",
      "bloch lines",
      "magnetic field driven motion",
      "spin transfer torque"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}